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Full text of "Text Book Of Mechanical Engineering"

and Coefficients for ditto.

713

(Fig. 698), and C by gauging actual discharge. Fig. 698 shews
at A a sharp-edged, at B a re-entrant, at c a cylindrical and
external, and at E a bell-mouthed orifice. At B the contraction

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is greatest by reason of the abrupt deviation of the stream lines;
at c there is contraction within the orifice; and at E no free
contraction, so that there C  c